Nothing wrong with Mobil 1 oil.

But the test is testament to several other points:

* Following the manufacturer's recommended service intervals
* The engineering, design, and manufacturing quality of the powertrain
* The benefits of running a vehicle hot, and not going through multiple hot/cold cycles, or operating with a cold engine on short trips

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue